Bug#667799: [3.0 -> 3.2.13 regression] Radeon KMS fails on Radeon X850XT (R480) graphics card

[Jonathan Nieder <jrnieder@gmail.com>]

Jonathan Nieder wrote:

> Alex provided a pointer to a patch[1] which I have attached.  If you'd
> like to test it, the following instructions should work.

Missed a step.  Oops.

>  2. fetch point releases
> 
> 	cd linux
> 	git remote add stable \
> 	  git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
> 	git fetch stable
>
>  3. configure and build

The missing step:

	git checkout stable/linux-3.2.y

which checks out a 3.2.y kernel.  That is close to what wheezy will
have and also seems to be the oldest series maintained upstream that
needs this fix.

> 	cp /boot/config-$(uname -r) .config; # current configuration
> 	lsmod; # make sure the radeon driver is loaded before the next step
>
> 	# optional: minimize configuration (only modules that are in use)
> 	make localmodconfig
>
> 	make deb-pkg; # optionally with -j<num> for parallel build
> 	dpkg -i ../<name of package>; # as root
> 	reboot
> 	... test test test ...
>
>    Hopefully it reproduces the problem.  So:

Thanks and sorry for the confusion.
Jonathan